Nobody knows marshmallows better than Kat and Lindzi, the founders of XO Marshmallow, a company that specializes in delicious, flavored gourmet marshmallows. In their debut cookbook, they share some of the secrets to their success. Infused with recipes, stories, and advice, join Kat and Lindzi as they walk you through their journey of marshmallow-making—from start to s'more.